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Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Lugar

Falta la ubicación

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:25 TARDE CEST

Descripción

Invasive slug Arion vulgaris becomes a major part of the malacofauna in Prague.

Fotos / Sonidos

Observ.

jxd

Fecha

Junio 12, 2020 a las 08:15 TARDE CEST

Descripción

Helix pomatia mating - photo Jaroslav Soukup

Fotos / Sonidos

Observ.

jxd

Fecha

Mayo 18, 2019 a las 03:06 TARDE CEST

Descripción

Mating Helix pomatia L. is in full swing

Fotos / Sonidos

Observ.

jxd

Fecha

Mayo 18, 2019 a las 03:06 TARDE CEST

Descripción

Mating Helix pomatia L. is in full swing

Fotos / Sonidos

Observ.

jxd

Fecha

Abril 29, 2019 a las 01:55 TARDE CEST

Descripción

In the Czech Republic, near Prague, we recorded the first spring sexual activity of Helix pomatia L.

Fotos / Sonidos

Observ.

jxd

Fecha

Abril 29, 2019 a las 01:55 TARDE CEST

Descripción

In the Czech Republic, near Prague, we recorded the first spring sexual activity of Helix pomatia L.

Fotos / Sonidos

Observ.

jxd

Fecha

Abril 29, 2019 a las 01:55 TARDE CEST

Descripción

In the Czech Republic, near Prague, we recorded the first spring sexual activity of Helix pomatia L.

Fotos / Sonidos

Observ.

jxd

Fecha

Abril 29, 2019 a las 01:55 TARDE SAST

Descripción

In the Czech Republic, near Prague, we recorded the first spring sexual activity of Helix pomatia L.

Fotos / Sonidos

Observ.

jxd

Fecha

Marzo 28, 2019 a las 12:13 MAÑANA CET

Descripción

Both individuals Lissachatina fulica connected by shell - "snail siamese twins" are viable to thrive, eat and grow.

Fotos / Sonidos

Observ.

jxd

Fecha

Marzo 13, 2019 a las 02:13 MAÑANA CET

Descripción

Mating of sinistral x dextral snail with spherical shell is possible!

The third Helix aspersa offsprings - a pair of sinistral x dextral F0. Mating of sinistral and dextral snails with spherical shell is common according to the breeding of our station.

Fotos / Sonidos

Observ.

jxd

Fecha

Febrero 28, 2019 a las 10:44 TARDE CET

Descripción

New addition: Achatina fulica Férussac, 1821 (or if you want Lissachatina) - a Siamese twin .

Fotos / Sonidos

Observ.

jxd

Fecha

Enero 18, 2019 a las 10:15 TARDE CET

Descripción

Last year, I confirmed that the sinistral mutation - left-handness - the snail Cornu aspersum is not a gametic. The offsprings are all right-handed, dextral. By it I left the left-handed snails and their right-handed descendants completely degraded scientifically and for breeding. I have already exceeded the 500th offspring since first offsprings. The seventh rearing. All offsprings are right-handed.

Fotos / Sonidos

Observ.

jxd

Fecha

Enero 18, 2019 a las 10:05 TARDE CET

Descripción

Last year, I confirmed that the sinistral mutation - left-handness - the snail Cornu aspersum is not a gametic. The offsprings are all right-handed, dextral. By it I left the left-handed snails and their right-handed descendants completely degraded scientifically and for breeding. I have already exceeded the 500th offspring since first offsprings. The seventh rearing. All offsprings are right-handed.

Fotos / Sonidos

Observ.

jxd

Fecha

Septiembre 18, 2018 a las 04:50 TARDE CEST

Descripción

The Limicolaria control group carried eggs, two experimental groups dextral x sinistral an individual not yet.

Fotos / Sonidos

Observ.

jxd

Fecha

Enero 5, 2019 a las 11:13 TARDE CET

Descripción

The Limicolaria control group carried eggs, two experimental groups dextral x sinistral an individual not yet.

Etiquetas

Fotos / Sonidos

Observ.

jxd

Fecha

Septiembre 18, 2018 a las 04:50 TARDE CEST

Descripción

The Limicolaria control group carried eggs, two experimental groups dextral x sinistral an individual not yet.

Etiquetas

Fotos / Sonidos

Observ.

jxd

Fecha

Diciembre 10, 2018 a las 07:22 TARDE CET

Descripción

The Limicolaria control group carried eggs, two experimental groups dextral x sinistral an individual not yet.

Fotos / Sonidos

Observ.

jxd

Fecha

Enero 3, 2019 a las 08:23 TARDE CET

Descripción

Two weeks after hatching, the shells of the F1 from sinistral x dextral F0 indivuduals are ordinary.

Fotos / Sonidos

Observ.

jxd

Fecha

Diciembre 10, 2018 a las 07:17 TARDE CET

Descripción

Mating of sinistral and dextral gastropoda is possible even in bulk shells

Earlier studies have shown that in the case of bulk shells, coupling of a sinistral x dextral individual is unlikely (Gittenberger, Margy, 2011. Asami, Cowie 1998). Therefore, we proceeded to the following breeding experiment: Three pairs of sinistral and dextral individual Helix aspersa / Cornu aspersum Muller, 1772 were isolated in three separate boxes on October 23, 2018. Still not in contact with other individuals.

18.11. In 2018, one sinistral individual died, the attempt was limited to two boxes.

10.12. In 2018 one of the boxes was found to be hatched.

These individuals can not yet be considered conclusive proof of the fruitful mating of the sinistral x dextral individual, since the effect of long-term stored sperm or autogenesis can not be ruled out. To fully demonstrate the reality, the experiment / breeding should be repeated over a longer period of time. Yet, thanks to rearing, it can be considered quite likely that a successful coupling can occur between the sinistral and dextral individual of the globulite shell.

Sources:

Asami, Takahiro, Cowie, Robert H. (1998).Evolution of Mirror Images by Sexually Asymmetric Mating Behavior in Hermaphroditic Snails. The American Naturalist 1998. DOI: 10.1086/286163

Gittenberger, E., Margy, C.J.P.J.(2011). Premating isolation reconfirmed in Arianta arbustorum (Linnaeus, 1758) (Gastropoda, Pulmonata, Helicidae). Basteria, vol. 75 (4-6), 2011, 57-58

Fotos / Sonidos

Observ.

jxd

Fecha

Diciembre 5, 2018 a las 09:08 TARDE CET

Descripción

During growth, it is evident that F1 scalarimorphic Helix aspersa / Cornu aspersum are completely standard individuals.

Fotos / Sonidos

Observ.

jxd

Fecha

Noviembre 7, 2018 a las 09:10 TARDE CET

Fotos / Sonidos

Observ.

jxd

Fecha

Noviembre 7, 2018 a las 09:09 TARDE CET

Descripción

F1 from scalarimorp ( scalariphorm Cornu aspersa are normal, non-scalarimorph snail with normal shell.

Fotos / Sonidos

Observ.

jxd

Fecha

Noviembre 7, 2018 a las 09:09 TARDE CET
Fuentes: : Átomo